2010021221321 has 4 divisors (see below), whose sum is σ = 2035464528000. Its totient is φ = 1984577914644.

The previous prime is 2010021221297. The next prime is 2010021221357. The reversal of 2010021221321 is 1231221200102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2010021221321 - 2¹⁰ = 2010021220297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2010021221321.

It is not an unprimeable number, because it can be changed into a prime (2010021421321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12721653221 + ... + 12721653378.

It is an arithmetic number, because the mean of its divisors is an integer number (508866132000).

Almost surely, 2^{2010021221321} is an apocalyptic number.

It is an amenable number.

2010021221321 is a deficient number, since it is larger than the sum of its proper divisors (25443306679).

2010021221321 is an equidigital number, since it uses as much as digits as its factorization.

2010021221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25443306678.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2010021221321 its reverse (1231221200102), we get a palindrome (3241242421423).

The spelling of 2010021221321 in words is "two trillion, ten billion, twenty-one million, two hundred twenty-one thousand, three hundred twenty-one".